What really is important are the changes in the dev-ui repository and package.json in the rest (which is repeated across all other modules), npm-shrinkwrap.json and yarn.lock files are generated. T...

What really is important are the changes in the dev-ui repository and package.json in the rest (which is repeated across all other modules), npm-shrinkwrap.json and yarn.lock files are generated. The change we're introducing here is locking dev-ui dependencies, which are no longer fetched to the node_modules in the root directory, but instead, are fetched into node_modules/dev-ui/node_modules. What we're doing is moving them to the node_modules directory so they are available to the module that is relying on dev-ui, lack of them there would break the build process because of missing dependencies. For yarn.lock we're basically copying the one generated in the .tmp directory, which is where we're firing yarn up during the build process. If you have any concern, please let me know.